Thank you for
reaching out on the community and telling us about your issue. You should be able to cancel the payment from the bills and income screen so we're able to redo it for the correct date. In the drop down in the top left of the register make sure check pay payees is selected. Afterwards it should list the payee that you're looking to cancel/redo. Under the last payment column you'll see it says Scheduled (Check Pay). Click on the blue link under that and you'll then meet a popup that lets us cancel the payment. I'll also show a photo that helps with what it should look like.
I have circled each of the areas the main areas that'll need to be found as well. Once you're able to cancel it you can re enter it by clicking check pay under the action column. Let me know if this helps you out!